Renfe Class 251

The Renfe Class 251 is a class of electric locomotives operated by Renfe in Spain. They are aesthetically and conceptually based on the JNR Class EF66 operated in Japan, but they have many differences in mechanical design and power output, as well as manufacturers.^[1]

Renfe Class 251
A Class 251 hauling a freight train in January 2016
Type and origin Power type Electric Builder Mitsubishi Heavy Industries, CAF, MACOSA Electrical equipment: Mitsubishi Electric, Westinghouse Build date 1982 Total produced 30
Specifications Configuration: ​  • AAR B-B-B Gauge 1,668 mm (5 ft 5+21⁄32 in) Length 20.7 m (67 ft 11 in) Width 3.19 m (10 ft 6 in) Height 4.28 m (14 ft 1 in) Loco weight 138 t Electric system/s 3000 V DC overhead catenary Current pickup(s) Pantograph
Performance figures Maximum speed 100 km/h (60 mph) 160 km/h (100 mph) Power output 4,650 kW (6,236 hp)
Career Operators Renfe Class Serie 251 de Renfe Numbers 251.001–251.030 Disposition Spain

Technical specifications

The locomotives have a B-B-B wheel arrangement,^[2] and are equipped with monomotor bogies, which have switchable gear ratios.^[1] Their maximum axle load is 23 tonnes.^[3]

History

The locomotives were introduced in 1982. A total of 30 locomotives have been built.^[1] They are mainly used on freight services.^[3]

• 
  Japanese Class EF66, from which the Class 251 is derived